“…Sixteen case reports ( 21 , 24 , 27 , 31 , 33 , 35 , 40 – 45 , 64 , 67 , 69 , 74 ) and two case series ( 48 , 77 ) described the occurrence of hematological disorders after alemtuzumab treatment. Of these studies, 5 concerned the occurrence of early-onset toxicities ( 40 , 42 , 43 , 48 , 67 ), including severe cases of leukopenia, neutropenia, lymphopenia and thrombocytopenia that occurred in four female and one male patients, aged <58 years, with a medication history that included at least IFN and/or natalizumab for all of them.…”